Widest rear tire/wheel possible

fastNYsix

fastNYsix

Apprentice
Jan 24, 2017
62
87
18
#1
I know this has been covered before many times, but with ls swapping and power increasing, what’s the widest rear tire possible. Frame notch and minor tubbing is obviously needed. I have 285 nittos nt05 on mine now and it spins like crazy. Even if I could fit a 335 or 345 in there, would there be much gain because the car is so light in the rear. I know racing is for the track but I’d like to gain a little more grip on the street. Would a ballast box be a better option? Or do I need better tires? I need to be ready to spank a hell cat or vette if the opportunity presents itself.
 
Last edited:
KCP

KCP

Greasemonkey
Oct 11, 2018
172
307
43
Bavaria, Germany
#2
Since there seems to be too much power, or better torque in your case at the rear, I would think about regearing to a numerically lower axle ratio to get the given power to the ground. That, in combination with a more sensitive right foot should do the job.
 
TURNA

TURNA

Geezer
Jul 24, 2009
6,326
8,011
113
Socialist NY
#3
Get some Mickey Thompsons
 
motorheadmike

motorheadmike

Comic Book Super Hero
Nov 18, 2009
3,186
5,738
113
Ottawa, Ontario Canada
#4
I fit 315/35R17s on 17x11s in the back of my old Turbo T with the stock frame - it did 1.7 60 foot times.
 
Streetbu

Streetbu

G-Body Guru
Supporting Member
May 22, 2011
774
1,302
93
Central NY
#5
Work on your suspension, that would help the most.
 
Wraith

Wraith

Royal Smart Person
Jan 13, 2013
1,046
2,570
113
DFW, TX
#6
285 what? I agree with the work on your suspension.

Ninja edit*

Which car in your sig are you talking about? I had zero problem hooking a sticky 275/45/17 on the street with all fresh bushings, boxed control arms, and SSM lift bars with around 400hp at the crank.
 
fastNYsix

fastNYsix

Apprentice
Jan 24, 2017
62
87
18
#7
fastNYsix

fastNYsix

Apprentice
Jan 24, 2017
62
87
18
#8
285 what? I agree with the work on your suspension.

Ninja edit*

Which car in your sig are you talking about? I had zero problem hooking a sticky 275/45/17 on the street with all fresh bushings, boxed control arms, and SSM lift bars with around 400hp at the crank.
85 6.0 turbo. 285 35 18. I have new shocks, boxed arms with delrin bushings. I went with Nitto nto5, they’re supposed to be a high performance tire. I might try the nt05r next.
 
Wraith

Wraith

Royal Smart Person
Jan 13, 2013
1,046
2,570
113
DFW, TX
#9
85 6.0 turbo. 285 35 18. I have new shocks, boxed arms with delrin bushings. I went with Nitto nto5, they’re supposed to be a high performance tire. I might try the nt05r next.
Okay, that makes more sense, the thinner the sidewall the tougher it is to hook up, you need the flex.
 
motorheadmike

motorheadmike

Comic Book Super Hero
Nov 18, 2009
3,186
5,738
113
Ottawa, Ontario Canada
#10

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